OS Engines have announced the OS Speed 21 Adam Drake Edition. Available in February as just the engine or as part of a combo set that comes with the T-2090SC pipe and 85mm longer manifold. Designed to Drake’s specifications and suitable for both buggy and truck, it features a new cylinder liner with new porting, newly design DLC crankshaft with double tungsten counter weight and a different bore x stroke (16.40 x 16.55 mm). The engine also comes with carburettor reducers in 6.5mm and 8.0mm, a ceramic rear bearing and is supplied with the familiar 21J carburettor and P3 Gold plug for better fuel mileage.